Fig. 3
From: Six years of high-resolution climatic data collected along an elevation gradient in the Italian Alps

Differences in the variable soil temperature at 20 cm depth (daily average) for the five monitoring stations along the elevational gradient, calculated separately for each of the four seasons. For each season, the temperature lapse rate has been calculated using linear regression. The box itself represents the interquartile range (IQR), which contains the middle 50% of the data. The bottom and top edges of the box correspond to the first quartile (Q1) and the third quartile (Q3), respectively. The line inside the box indicates the median (Q2) of the data. The whiskers extend from the edges of the box to the smallest and largest values within 1.5 * IQR from the first and third quartiles. The points represent outliers, defined as values that are below Q1 - 1.5 * IQR or above Q3 + 1.5 * IQR.